Air pollution may cancel out health gains of walkable neighbourhoods: Ontario study

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New research that looked at data from nearly 2.5 million Ontarians suggests that while living in more walkable neighourhoods might be good for people’s health, the benefits could be negated in areas with higher levels of air pollution.

The study led by researchers at St. Michael’s Hospital in Toronto and the Institute for Clinical Evaluative Sciences gathered rates of diabetes and hypertension by neighbourhood using the Ontario Diabetes Database and the Cardiovascular Health in Ambulatory Care Research Team’s database.

Past research has shown that less walkable neighbhourhoods are associated with worse health outcomes, most likely because people in walkable neighbourhoods get more exercise. This study was no different in that regard, with lower walkability significantly correlated with higher rates of hypertension and diabetes.

Nicholas Howell, a recent PhD graduate in the St. Michael's Li Ka Shing Knowledge Institute and co-lead of the research, said that reason for the lack of an apparent benefit in the highly walkable but highly polluted areas could be that people living in those areas are more likely to walk or cycle than to drive cars, which could expose them to more unhealthy air “based simply on the amount of time they spend outside.

Source: Healthcare Press (healthcarepress.net)

 

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